Perhaps you should try some spelling variations:
dang xay » dang van, van xay
su sach » so sach, vu sach
duc ban » duc tan, duc van, dua ban
hoi cua » hoi chuc
hai cua » thai cua, dai cua, lai cua
xuc ban » cuc ban, quoc ban, xuat ban
sach ky » sac ky, sach y, sach ty
hieu va » lieu va, hieu qua
xay hoi » xa hoi, tay hoi, cay phoi
ky dang » ky nang, ky danh
va cam » va cham, va cac, va cao

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ky dang xay hoi. hieu va cam ((xuc ban) OR (duc ban)) lanh ((hai cua) or (hoi cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky dang xay hoi. hieu va cam ((xuc ban) OR (duc ban)) lanh ((hai cua) OR (hoi cua)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky dang xay hoi. hieu va cam ((xuc ban) OR (duc ban)) lanh ((hai cua) or (hoi cua)) tre".
• Adding a wildcard symbol may retrieve word variants: su sach ky dang xay hoi. hieu va cam ((xuc ban) OR (duc ban)) lanh ((hai cua) or (hoi cua)) tre*.